Linux Essentials – Chapter 15 Exam Answers 2019 + PDF file

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  1. Which of the following commands set “other” permissions on file to r-x?
    • chmod o=r+x file
    • chmod o=rx file*
    • chmod o-r-w file
    • chmod o+rx file
  2. Which of the following commands sets “other” permissions on file to r-x?
    • chmod 777 file
    • chmod 776 file
    • chmod 775 file*
    • chmod 774 file
  3. Only one set (user, group, other) of permission can be changed at once using the symbolic method.
    True or False?

    • True
    • False*
  4. Which of the following are methods for setting permissions using the chmod command? (choose two)
    • binary
    • symbolic*
    • letter
    • octal*
  5. The chown command can be used to change the owner and group of a file.
    True or False?

    • True*
    • False
  6. The chgrp command can be used to change the owner and group of a file.
    True or False?

    • True
    • False*
  7. The user sysadmin will be able to read the file because they own it.
    —-r–r– 1 sysadmin group 38270 Sep 2 18:49 file
    True or False?

    • True
    • False*
  8. The user sysadmin will be able to change the permissions of the file because they own it.
    —-r–r– 1 sysadmin group 38270 Sep 2 18:49 file
    True or False?

    • True*
    • False
  9. Octal notation uses the following values for the permissions granted:
    • r = 4, w = 2, x = 1*
    • r = 7, w = 5, x = 0
    • r = 3, w = 2, x = 1
    • r = 4, w = 2, x = 0
  10. Which of the following permissions would allow all users to add, view, and delete files in a directory?
    • 666
    • 775
    • 750
    • 777*
  11. A user cannot delete a file if they do not own it.
    True or False?

    • True
    • False*
  12. The “execute” permission on a directory allows you to: (choose three)
    • Change to that directory or use it as part of a path*
    • Along with write permission to successfully delete the directory
    • Along with read permission to successfully perform ls -l*
    • Along with write permission to successfully create new files*
  13. The “execute” permission on a file allows you to:
    • Run the file as a script*
    • This permission isn’t meaningful for text files.
    • Delete the file
    • Move the file to a new directory
  14. The chgrp command can be used on a file by:
    • Only root
    • A user that belongs to the files current group
    • The file owner and root*
    • Only the file owner
  15. The chown command can be used to change the user owner on a file by:
    • Only root*
    • A user that belongs to the files current group
    • The file owner and root
    • The file owner
  16. The chmod command can be used on a file by:
    • The file owner and root*
    • Only root
    • A user that belongs to the files current group
    • The file owner
  17. Which option for the chown command can be used to change the owner of a directory and all the files and directories below it?
    • -r
    • -R*
    • -f
    • -a
  18. The chown command will only accept one file at a time as an argument.
    True or False?

    • True
    • False*
  19. The “execute” permission is never set on files by default.
    True or False?

    • True*
    • False
  20. The user owner of a file will always have the same or higher permissions as “other”.
    True or False?

    • True
    • False*

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